GB2135445A

GB2135445A - Support of a horizontal thermally loadable container

Info

Publication number: GB2135445A
Application number: GB08330677A
Authority: GB
Inventors: Konrad Nassauer
Original assignee: Borsig GmbH
Current assignee: Borsig GmbH
Priority date: 1983-02-04
Filing date: 1983-11-17
Publication date: 1984-08-30
Also published as: CA1213258A; SU1246902A3; US4527761A; DE3303752A1; GB2135445B; GB8330677D0; FR2540602A1; FR2540602B1; IN160782B

Description

1

SPECIFICATION Support of a horizontal. thermally loadable container

The present invention relates to a container structure and has particular reference to the 70 support of a horizontall thermally loadable container.

A container of that kind can be, for example, a waste heat tank, the heat exchanger tube bundles of which are surrounded by a pressure shell. In order to be able to absorb the length changes arising from temperature changes, the container can be slidingly mounted and, for example, rest on rollers or slide bearings. Only horizontal movement can be absorbed by way of such bearings. In other cases, movement in vertical direction must be permitted in addition to the horizontal movement.

This is required, for example, when the waste heat tank is connected to a connecting pipe of a reactor and this connecting pipe displaces in height during a different heat loading of the reactor and travels by a certain amount in vertical direction. The connection between the connecting pipe of the reactor and the waste heat tank would be subject to excessive mechanical loading through this 90 vertical wandering.

There is thus a need for supporting a thermally loadable container in such a manner that it can follow movement in vertical direction without mechanical overloading of unassociated pipe connection.

According to the present invention there is provided a container structure comprising an elongate container which is arranged so that its longitudinal axis extends substantially horizontally and which is supported at each of two pluralities of support brackets thereof by a respective one of two spaced apart support means arranged to at least partially accommodate thermally induced movement of the container, one of the support means being arranged to guide the associated brackets to be vertically and horizontally displaceable and the other one of the support means comprising hinged support legs which are inclined relative to and pivotable generally in the direction of said axis.

In a container structure embodying the invention, a length change caused by temperature can effect a change in the inclination of the hinged support legs and thereby constrainedly a vertical 115 movement of the container. The inclination of the hinged support legs may be so chosen that the maximum arising vertical movement of an associated connecting pipe is attained on the maximum length expansion of the container.

An embodiment of the present invention will now be more particularly described by way of example with reference to the accompanying drawings, in which:

Fig. 1 is a side elevation of a container structure 125 embodying the invention; and Fig. 2 is a front elevation of the container structure, but showing, on the righthand side, the righthand container bearing of Fig. 1.

GB 2 135 445 A 1 Referring now to the drawings, there is shown a waste heat tank with a pressure-tight shell 1. Heat exchanger tubes, which conduct a heat exchange medium such as hot gas, are arranged within the shell 1. The waste heat tank is provided with an entry stub pipe 2 for the entry of the hot gas to be cooled and with an exit stub pipe 3 for the exit of the cooled gas.

The entry stub pipe 2 of the tank is connected to a stub pipe 4 of a reactor. This stub pipe 4 can be subject to an upwardly directly movement on thermal loading of the reactor. In order that the welded seam, which represents the connection between the stub pipes 2 and 4, is not subject to undue mechanical stress during this vertical movement, the waste heat tank must be able to execute the same vertical movement. For this purpose, the waste heat tank is supported as described in the following:

The tank is provided at each of two mutually opposite sides with a respective pair of.support brackets 5 and 6, which are welded to the shell 1. The support brackets 5 and 6 of each pair rest on two bearings 7 and 8, which are arranged at a spacing from each other at the respective side of the shell 1 and are supported on a foundation.

The bearing 7 closest to the stub pipe 2 comprises biassed springs 9, which are retained between two lateral guides 10. The guides 10 are slidingly mounted in horizontal direction on a transverse carrier 11, which bridges two vertical supports 12. The spring 9 presses against a plate 13, which is provided under the end face of the bracket 5 and engages into the lateral guides 10. The bias of the springs 9 is greater than the proportion of the weight of the waste heat tank acting on the bearing 7 so that an upwardly directed force exists.

The bearing 8 remote from the entry stub pipe 2 consists of a respective hinged support 14 arranged at each side of the shell. Each hinged support 14 is provided at its ends with joints 15, one of which is provided on the foundation and the other of which rests against the associated support bracket 6. The hinged supports 14 are inclined relative to the longitudinal axis of the shell 1 in direction towards the entry stub pipe 2 and can be pivoted in the longitudinal direction of the shell.

The bearing 7 with the spring 9 is illustrated to the left, and the bearing 8 consisting of the hinged support 14 is illustrated to the right, in Fig. 2 to facilitate understanding of the embodiment.

The bearing 7 and the bearing 8 are of course present at both sides of the shell 1.

In use of the waste heat tank, the shell 1 expands in only one direction, since it is held fast at the entry stub pipe 2. Through the length expansion directed towards the right in the drawing, the hinged supports 14 raise up and move the support brackets 6 on an upwardly directed circularly arcuate path. The inclination of the support brackets in the initial state is so fixed that the same raising as at the entry stub pipe 2 comes into being constrainedly for the length 2 expansion when the tank is placed in use. The springs 9 of the bearings 7 follow this upward movement.

Claims

1. A container structure comprising an elongate container which is arranged so that its longitudinal axis extends substantially horizontally and which is supported at each of two pluralities of support brackets thereof by a respective one of two spaced apart support means arranged to at least partially accommodate thermally induced movement of the container, one of the support means being arranged to guide the associated GB 2 135 445 A 2 brackets to be vertically and horizontally displaceable and the other one of the support means comprising hinged support legs which are inclined relative to and pivotable generally in the direction of said axis.

2. A structure as claimed in claim 1, said one 20 support means comprising biassed springs exerting on the associated brackets an upwardly directed force greater than the downward force exerted by the container on said one support means.

3. A container structure substantially as hereinbefore described with reference to the accompanying drawings.

Printed in the United Kingdom for Her Majesty's Stationery Office, Demand No. 8818935, 811984. Contractor's Code No. 6378. Published by the Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained.

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